TRANS-POLYMERIZATION OF BUTADIENE WITH HA LIDE-CONTAINING LANTHANIDE CATALYST

Authors
MARINA NG DUVAKINA NV SABIROV ZM GLUKHOVSKOI VS LITVIN YA MONAKOV YB
Citation
Ng. Marina et al., TRANS-POLYMERIZATION OF BUTADIENE WITH HA LIDE-CONTAINING LANTHANIDE CATALYST, Vysokomolekularnye soedinenia. Seria A, 39(1), 1997, pp. 163-164
Citations number
8
Categorie Soggetti
Polymer Sciences
Journal title
Vysokomolekularnye soedinenia. Seria A → ACNP
ISSN journal
05075475
Volume
39
Issue
1
Year of publication
1997
Pages
163 - 164
Database
ISI
SICI code
0507-5475(1997)39:1<163:TOBWHL>2.0.ZU;2-4
Abstract
Polymerization of butadiene with the catalytic system NdCl3 . 3TBP-i-C 8H17MgC4H9 was studied nt 20 degrees C in toluene and heptane. Maximum activity corresponds to the ratio Mg : Nd = 12-13 and the polymer con tains 95% of 1,4-trans-units, At higher Mg : Nd ratios, the stereoregu larity sf polybutadiene deteriorates and is controlled by the nature o f the solvent. It Is suggested that trans-polybutadiene is produced by the catalytically active NdR(3) compounds formed by the reaction of t he starting components of the catalytic system.